Responses
Could you elaborate? What is the Rules series?
Loverly, Rules is a series of mangas, and this one, Please, is the first.
Go look at the manga Kiss (same mangaka). There is a list near the beginning of the chapter that gives the names of the mangas and tells the order in which they're supposed to be read. :)
(Just for clarification, the list of mangas is on page 5 of Kiss, not in the description.)
This was quite sweet, not as good as some of the later ones I think, but a good introduction to what will become the Rules series